21209156613

素因数分解:

$3^3\times {\mathrm{37}}^1\times {\mathrm{173}}^1\times {\mathrm{122719}}^1$

素因数の和:122938

約数の個数: 32

約数和(自身を含む): 32456985600

約数和(自身を除く): 11247828987

約数列:

[1, 3, 9, 27, 37, 111, 173, 333, 519, 999, 1557, 4671, 6401, 19203, 57609, 122719, 172827, 368157, 1104471, 3313413, 4540603, 13621809, 21230387, 40865427, 63691161, 122596281, 191073483, 573220449, 785524319, 2356572957, 7069718871, 21209156613]

約数ペア:

[(1, 21209156613), (3, 7069718871), (9, 2356572957), (27, 785524319), (37, 573220449), (111, 191073483), (173, 122596281), (333, 63691161), (519, 40865427), (999, 21230387), (1557, 13621809), (4671, 4540603), (6401, 3313413), (19203, 1104471), (57609, 368157), (122719, 172827)]